Can you find out the remainder when 3^300 is divided by 5?
There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number. What is the smallest number that stands true on the statement?
Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?
What's a single-digit number with no value?
What three numbers, none of which is zero, give the same result whether they’re added or multiplied?
Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?
There is a square of a particular number which when doubled, becomes 7 more than its quarter. Can you find the number?
John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?
Our product and our sum always give the same answer. Who are we?
Can you find a number that lies one third of the distance between 1/3 and 2/3?
Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
